meta-firestone: Add phosphor-hwmon config

Add configs for occ and rtc.

Change-Id: Id811d4b1c180fd68660d76019551fd5a8b90b47d
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/meta-firestone/recipes-phosphor/sensors/phosphor-hwmon%/obmc/hwmon/ahb/apb/i2c@1e78a000/i2c-bus@400/rtc@68.conf b/meta-firestone/recipes-phosphor/sensors/phosphor-hwmon%/obmc/hwmon/ahb/apb/i2c@1e78a000/i2c-bus@400/rtc@68.conf
new file mode 100644
index 0000000..8b6053e
--- /dev/null
+++ b/meta-firestone/recipes-phosphor/sensors/phosphor-hwmon%/obmc/hwmon/ahb/apb/i2c@1e78a000/i2c-bus@400/rtc@68.conf
@@ -0,0 +1,3 @@
+LABEL_temp1=rtc
+WARNLO_temp1=10000
+WARNHI_temp1=35000